AN IMPROVED PROCESS FOR THE PREPARATION OF ETORICOXIB

摘要

pThe present invention relates to an improved process for the preparation of Etoricoxib by reacting ketosulfone of formula-ll with vinamidinium salt of formula-Ill in the presence of an acid, followed by conversion to an acid addition salt and finally desaltifying to get Etoricoxib of formula-l./p[WO2013144977A3]